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Finding the Fourth Proportional to 535.96, 739.66 and 339.40

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Solution

The fourth proportional to 535.96, 739.66 and 339.40 is: 468.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    535.96 : 739.66 = 339.40 : x
  2. Step 2: Convert to fraction form
    535.96/739.66 = 339.40/x
  3. Step 3: Cross multiply
    535.96x = 739.66 × 339.40
  4. Step 4: Simplify right side
    535.96x = 251,040.60
  5. Step 5: Solve for x
    x = 251,040.60/535.96
  6. Step 6: Final answer
    x = 468.39

Related Problems

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.